potts r



Q P 1943- 1.. M. POTTS 22,377

KEYBOARD PERFORATOR AND COUNTER Original Filed Dec. 25, 1931 10 Sheets-Sheet 1 INVENTOR Louls M. DOTTS ATTORNEY- Sept. 14, 1943. 1.. M. POTTS KEYBOARD PERFORATOR AND COUNTER Original Filed Dec. 25, 1951 10 Sheets-Sheet 2 ME kmQ INVENTOR LOUIS M. POTTS /#3 ATTORNEY Original Filed Dec. 25, 1951 10 Sheets-Sheet 5 S w O D mm m m 0 a 6 n. NU A a L. M. POTTS Re. 22,377

KEYBOARD PERFORATOR AND COUNTER Sept. 14, 1943.

10 Sheets-Sheet 4 o riginal Filed Dec. 25, 1931 FIG. /4

' LOUIS M. DOTTS ATTORN EY Sept. 14, 1943. L. M. POTTS ,377

KEYBOARD PERFORATOR AND COUNTER Original F'iledDec. 23, 193] 10 Sheets-Sheet 5 FIG. /6 03 INVENTOR LOUIS M. DOTTS 2/ V 1 I z ATTORNEY Sept. 14, 1943. M. POTTS KEYBOARD PERFORATOR AND COUNTER Original Filed Dec. 23, 1931 10 Sheets-Sheet 6 lNVENTOR LOUIS M, POTTS 1% ATTORNE Sept. 14, 1943. -rs I Re. 22,377

' KEYBQARD PERFORATOR AND COUNTER Original Filed Dec. 23, '1931 10 Sheets-Sheet 'T INVENTOR LOUIS M. POTTS BYM ATTORNEY Sept. 14, 1943. L. M. POTTS Re. 22,377

KEYBOARD PERFORATOR AND COUNTER Original Filed Dec. 23, 1951 10 Sheets-Sheet 8 I .MMM."MM

nnnnnnn nw lululullkm INVENTOR i LOUVIS M. POTTS BY I ATTORNEY Rev 22,377

Sept. 14, 1943. 1.. M. POTTS KEYBOARD PERFORATOR AND COUNTER Original Filed Dec. 23, 1931 10 Sheets-Sheet 9 INVENTOR LOUIS M. DOTTS /WfiW ATTORN EY Sept. 14, 1943. POTTS Re. 22,377

KEYBOARD PERFORATOR AND COUNTER Original Filed Dec. 25, 1931' 10 Sheets-Sheet l0 INVENTOR LOUIS M. DOTTS ATTORNEY Reissued Sept. 14, 1943 UNITED STATES PATENT OFFICE KEYBOARD PERFOR'NIOR AN D COUNTER Louis M. Potts, Evanston, Ill., assignor, by mesne assignments, to Teletypesetter Corporation,,a corporation oi Delaware Original N05 2,222,631, dated November 26, 1940, Serial No. 582,742, December 23,1931. Renewed October 22, 1937. Application for reissue January 16; 1943, Serial No. 472,630

109 Claims,

This invention pertains to typesetting systems and apparatus therefor and more particularly to, periorators and counters which may be employed for preparing perforated tapes for the automatic control of composing machines;

small brass units having characters indented in,

the edges and which are of different thicknesses due to'the fact that the characters'vary inwidth. In view of this condition a given length 01' line may include a. variable number of matrices depending upon the particularcharacters used in the line. It is obvious, therefore, that'a given length of line is dependent, not upon the number of characters in the line but rather upon the thicknesses of=the characters or matrices making up the line." Consequently, it is necessary in preparing the perforated tape, representing lines of composed matter, to totallze the various thicknesses'o'i matrices corresp'onding'to the code perforatlons made in the tape so that" the operator will be apprised of the length 1 of line remaining as each key is operaiaed and can thus judge the best point at whichto iend a line.

Besides the usual character matrices, composing machines of the particular type to which the present invention relates are also provided with expansible' justifying matrices 'or space bands which are adjusted between certain ranges of thickness before the casting 1 operation is performed. The countingdevice here described indi-' cates to the transmitting operator the total-iz'ed thickness of the matrices in a line during the process of composition, and it separately mar cates the number as well as the minimum;'maximum and variable-thickness of the justifying matrices. The indicating means associated with the counting device of this invention correspohds substantially to that disclosed in U. 5. Patent No. 2,000,029 granted ,to Er E. Kleinsciimidt and Louis M. Potts. I

rnt e typec t ns machine kn n broad y as. o pos n an asso tmen o ma ri e of e same style or iont are .storeq in ariaceptaele. Called. a meaz ne, and these -magazines are adapted to 'be utilized intercha eably in said machine. Corresponding -matrices in the diiier t fonts y vary n c ne s; hu line -0 e fi eien th bu com osed o a dif e ent t e. or f nt of type will 1a difiereut number Machines of this type' of characters per line, which may require a different degree of justification.

One 'of the outstanding objeetsof the present.

invention is the provision of a: removable and g readily interchangeable code barunit to permit matrices. of any font. of type-to be properly in-.-

tegrated or totalized by the counting device with-- out necessitatingany other change or adjustmentwhatever in the apparatus.

Another object of this invention; is-to provide a substantial overlap in themeehanical operation of the keyboard to thereby enhance the speed of operation of the apparatus.

A nother object is to provide a perforator for. I preparing a tape-to. control type composing.

Another object is to provide a keyboard per-- forator andcounter that is exceptionally com-- pact and the size of which. remains unaltered regardless of the number-of units into which the thickness of, thematrix is divided.

Another object of the invention is to provide a means whereby perforated matter may be deleted, and simultaneously therewith the indicatfv ing device will be operated subtractively to correspond to the deletion. I I e A further-objectis to provide an arrangement for' eifecting the easy reading of the perforatedrecord bydirecting the tape in an acclivous plane in the line of vision of the operator.

A further object is to provide a means for indicating, through the instrumentality of a signal lamp, when a justifiable lineof composition has been perforated in'the tape.

A still further object is to provide an indicating mechanism having a scale member matable to each code bar unit and means facilitating the insertion of an interchangeable code bar unit and its companion scale member.

It is believed that a general description of the structure for accomplishing the foregoing objects of this invention presented at this oint will be conduciveto a more ready understanding of the detailed description which is to follow.

The cycle of operations of the present apparatus is initiated by depressing the keys ,of the keyboard as is usual in devices of, thiskind. ,With each key lever there is associated a code bar'in dividual thereto. All of these code bars are carried in a frame which is removable irom the. gen-.

, the fac tu ati'on bf code bars may be providedwhen it is desired to operate the apparatusior a. different style or font of type; thus a set of code bars may be provided for each different font of type. The code bars are notched to cooperate with two" sets of selector bars which arearranged transversely of the code bars.

Upon the depression is operated, to in turn. initiate the operation of a universal operating bail which coacts with the selected code bar andurges' it against a per-f The muted. combination of the selector bars.

selector bars thus selected simultaneously effect the selection of a corresponding series of punch' interference bars in the perforating apparatus anda stop bar in the counting mechanism. The

of anyone of the key levers a release bail common to all the key levers,

Figs. 13 and i4 are fragmentary views of the counting wheel pawl release mechanism. Fig. 15 is an elevational view of the counting mechanism.

Figs. 16 and 17 are elevational views of the perforating device.

Fig. 18 is a sectional view-taken on line iii-l8 of Fig. 16. I T Fig. 1915 a sectional view taken on line |9--l9 of Fig. 16. i

Fig. 20 is a perspective view of the permutai g i r r 22,377

eral apparatus so that a difierent frame withits Fig. 11 is a crossvsectional view taken on line llll of Fig. 1.

Fig. 12 is a fragmentary perspective View of the operating mechanism.

w tion-bar unit;

Fig. 21 is a longitudinal elevational view of 'the permutation-bar unit.

stop bar thus selected corresponds to the thickh ness of the matrix. corresponding to the key depressedi Associated with thepperating "bail and oper ativ'ltherewith is a. trip-arm the function'of which is .tofinitiate' the'operation of the main' operating shaft? [The iatter 'thenv proceeds to carry oi'i; :the T 'coui' ting and perforating opera-- tions substantially?"simultaneously; There is' carried on this main shaft emain operating: cam

the outer cam surface' bffwhich cooperates with a main operatiri g lever offthe perforator to effect the punch block. Thisoperation also eflects the stepping or? advancement of the tape.; The inner cam surface of the main "coacts'withwa main' operating lever of the counting 'ine'cha nism "t'd effect in a. consecutive manner -:the release 0:; ai fixed pawl" from the counting or unit wheel and the engagement of amovable pawlto'theunit'wheelL The unit when, which tends i rotate 'co'ntinually then carries the movable pawl "alongjwith it until the pawl -is '-interc'epted' bythe previously selected wheel thus" corresponds to" the thickness of the Fig- 22 is an end view of the operating bail showing the release mechanism therefor.

Fig." 23 is a perspective view. of 'the interchangeablecoder bar unit. 'w-

Fig. 24 is a transverse'sectional view of thekey board taken on line Ila-24" Fig. 1 illustrating the shift mechanism.

.Fig.r25 is '9. "perspective. view bit the shift look I device- Q I u matrix identi'iied'with the selected stop bar, and

H a corresponding "rotation is imparted to-the indieating mechanisnffthrough a suit'ab le'g'ear chain. The indicating mechanism comprises ai cylindrical chart and. a -helical shutter such 'asis described and shown in the'aforementioned pat.- ent."

the rene ing (it-Lscriptioln of the preferred emb'odiirient. ofwthe inventid'r'nfta'ken in conjunction withthe accompanying drawingsinwhichf r Fig 1 is aplan vew of the keyboard perforate!- and counter constituting the invention,

r 2 is'faitdp view ojf thefauto nati'c tape reel.

Tri -'41 i re a? j h quat n mechanism.

15"? i dinal sectional view. of th perating cam shaft i I 4 5 lon t di al, indicatingjshaft;

:- F sa 'lj 13.38 sectional view taken on line --l of 6 showing'the space band counting mech- -Fi 8 is a cross- 'sectinnal view taken on line Fig. 9 isa cross-sectional view taken on line 9 9'of'Fig. 6. I. a Fig. 10 is" a cross-sectional view, taken on line ioioorrig. 6. v i.

Fig. 3 is a partial'elevational view of the tape, reel. i

sectional view of j Otherobjects of the inventionwill appear from Fig. 26 is attransverse sectional view, of the keyboard adjacent the space? key lever.

Fig. 27 is a transverse sectional; viewwith some. parts-eliminatedfltaken,on 1,1ine 2.'|211 of Fig.1

adjacent ftheelevatorkeyiever. 1 t i Fig.28 isa view illustrating .the operation of the'repeat key lever. I

rig. 29 is. a" transverse sectionalviewwot the. keyboard takenonrline 29-45 ofFig. 1,, showing the preferred form'xof'key operation;

Fig.. 30 is a i view: illustrating a modified Figh31 is:'a.,.transversesectiohalyview of the:

keyboard showing'a modifiedfunshift mechanism.

Fig. 32 is. a partialtransversetsectional view; of the keyboard {showing the shift. mechanism employed. with the mechanism shown, in;Fig-,31..

Fig; 33. illustrates the key arrangement employing the, unshif t and shift arrangement shown in Figs. 31 and 32; respectively; a J- Fig. 341s a' top view; of a modificationqshowing thev totalizer reversing: mechanism.

- Fig. 35 is a sectional viewtak'en on line 35-45 of Fig. 34'.

i Fig: 3e isga sectional view' takeiidirim of. Fig. 34

Fig. 36a is a-sectional; of the modification of Fig. 34 showing-the disablingmeans forth perforator code selecting, mechanism. 31

Fig. 37, is a. diagrammatic view of the magnetic I perforator ,xFig. 3,8}isa top view of the magnetic perforator. 39: is asectional' view on line 39-39 of.

33 showing the operating cam mechanism for the magnetic-.perforator. i Fig. 40 isa circuit arrangement neticperf orator. i M

Referring now to the drawings wherein. the samereference, numerals are used designating for the magsimilar parts. the apparatus fdi'sclosed, comprises a main frame]! jadaptedto-enclose a selector mechanism 'to hereinafter described and is provided-at.tliejfrontwith a keyboard comprising key 'levers ioperable by keys 6 in the usual man'- member- 1 mounted upon the frame 4 is .ad'apted tdci'irry a -motor 8, and counting; indieating and perforating mechanisms. "Atthe rear form:

of the apparatus 'is located the motor 8 having an armature shaft 9 on which is fixed a pinion Beneath the pinion l3 anclin mesh therewith is a gear 'H, which is fixedly mounted on power shaft |2-,. which is disposed transversely to the armature shaft 9 and is journaled in brackets l3 and I5. Shaft l2 also carries for rotation therewith .spiral gear l6 and worm gear or pinion ll (Fig. 4) which mesh with gears l8 and IS on cross-shafts 20 and 2|, respectively, whereby shaft 20 is adapted to rotate at a higher speed than shaft 2| for the reason that in the normal operation of the apparatus the shaft 20 rotates one-half revolution for each operation while the mechanism on shaft 2| must rotate only a small fraction of a revolution for the same operation. Also during the restoration operation, wherein the device is restored'to' its normal position after a cycle of operations, the shaft 20 must make substantially. four revolutions while the shaft 2| makes one revolution. By completing an operation in one-half revolution the speed of rotation of the shaft 20 and the parts carried thereon is one-half of what it would be if a full revolution were used for the same maximum permissible. rate of keyboard operation, thus reducing the strain and wear on the parts or making possible a higher permissible rate of operation.

The cross-shaft 20 and the mechanism thereon are shown in longitudinal section in Fig. 5 which will now be described, reference also being had to Fig. 1. Shaft 20 is'journaled in anti friction bearings suitably mounted in brackets 22 and 23 and gear |8 is ,secured by means of screws to a flanged collar 25 which is'fixedly mounted oh shaft 20. Collar 25 articulated by means of a'splined connection to a flanged sleeve 26. Loosely mounted on the sleeve. 26 is ,a drive disc 21 which together with a flange of sleeve 26 forms. a part of a friction clutch28 and which is interposed between a pair, of discs. of friction material, one disc of whichlis interposed between the drive disc 2l' and the flange of sleeve 26'. The pressure upon these friction discs is supplied by a slit annular spring 24' interposed between a pair of washers capable of adjustment by a nut 34. Power from the disc 21 is communicated to a disc 29 through two diametrically opposed laterally disposed projections thereof which fit into corresponding notches in the drive disc 21. Disc 2915 secured to. the reset cam 30, which is splined to the hub of an operating cammember 32- loosely mounted on shaft 2.0.

Adjacent the cam member 32 (Figs. 4 and 5) and also loosely mounted on shaft 20 is a driven member 33 of a toothed or grab clutch 35. the driving member 36 of which is fixed to shaft 20 and rotatable therewith. 'I'he'driven member 33 is normally held out of engagement with the driving member 36 by means of the cooperative are operable through the means of both the fric-' The tion clutch 28 and the positive clutch 35, reason for the twofold control of cams and 32 is to secure the advantages of a positive grab clutch for transferring power to said cams while at the same time obviating the shock or jar due to the sudden starting by engagement of the teeth. of such a clutch through the use of the friction clutch 28. In this manner the cams 33 and 32 are started slowly at first from power through the friction clutch 2B and after a short initial movement or rotation are directl and positively coupled to the drive shaft 29 through the grab clutches 35, it being noted that the initial rotation of cam 32 together with'interconnected sleeve 33 has allowed said sleeve 33 to move slowly to the left, due to the cooperation of cam surface 37 and follower 38, into engagement-with the fixed portion 38 of the clutch 35.

To the right of gear I8 (as viewed in Fig.5) and loosely mounted on the shaft 20 is a flanged sleeve portion 40 upon which is mounted a friction clutch which is similar to that associated with sleeve member 26. A drive disc 4| and a gear 42 are interposed between friction discs which are in turn adjustably compressed by the cooperation of spring 43 and nut 45 in thesame manner as in clutch 23. Disc 4| is articulated to gear l8 by means of a driving connection 46 similar to. connection 29. I

To the right of sleeve 40 and splined thereto is a sleeve member 41 which is also loosely mounted on shaft 20. Sleeve member 41 is provided with two. integral portions; namely, stop disc 46 and cam 49, the functions of which will hereinafter appear.

The cross-shaft 2| and the mechanism thereon is illustrated in Fig. 6, a description of which will now be given, reference being had also to Fig. 1. Shaft 2| is journaled in anti-friction bearings suitably mounted in the brackets 50 and 5|, and is. adapted by reason of the rigidity of the shaft to extend to the right beyond the bearing 5| topermitthe interchangeability of the cylindrical scale member of an indicating-deg vice.

It has already been noted thatgear I9 is carried by shaft 2| From Fig. 6 it will be observed that gear Ill is mounted on a sleeve member 52 and that secured thereto and rotatable there'- with is a housing member 53, into the recess of which is placed a pawl 56, which is pivoted at 51 (Fig. 9) and which is normally urged in a counterclockwise direction by a spring 58. The sleeve member 52 is slotted in a suitable manner, as shown in Figs. 6 and 9, to cooperate: with pawl 56, thus when gear I9 is rotated in a counterclockwise direction (as viewed in Fig. 9), the sleeve 52' through the cooperation of pawl 55 will be rotated in the same direction. Thus pawl. 56 is normally effective to impart the rotative motion of gear H! to sleeve 52f Interposed between the housing 53- and the gear 59* is a washer' fiil, which as shown in Fig. 1-0 is a part of a roller bearing grip-clutch 6| mounted on the sleeve52. To the inner-member of clutch 6| isv secured a drive connection 63 (Fig. 6) the laterally disposed. lugs of which cooperate with corresponding notches in a flange 66 of a flanged sleeve 6]. Drive connection 63 is also keyed to the sleeve 52. The sleeve member 61 carries a friction clutch of similar design to that previously described, that part of the clutch interposed between the pair of friction discs being a double-flanged sleeve 69, one flange 10 of which is'provided on its periphery with gear teeth and the other flange I! provided around its periphery with a cam surface to opcrate respective elements, the functions of which will hereinafter appear.

I mechanism in the following" manner. i I

busly mentioned, the speedof rotation imparted to shaft 29 by gear I6 is normally greater than the speed imparted to'shaft 2| by pinion' l|.

representing a scale.

wiThefpurpose of the roller clutch BI is toeflect a. rapid return of the counting and. indicating As previ- Thus to impart to shaft2l substantially .the same speed as shaft 2|Iwhen iti's desired to return the counting and indicating'mechanism to theinitial oribeginning-of-line position, a train of gears 80 (Fig. 1) is'provided to connect gear 42on'shaft20 with gear'59 on shaft 2| sothat whengearfl is released forrotation, as will hereinafter appear, its. rotation will be at once"imparted through gears 8|! to gear 59. It is thus seen that. gear I9 (which rotates constantly) and gear 59 will for a brief period be rotating simultaneously" but" at different speeds, gear 59'rotating ,faster than gear 9. This being so, gear 59fwill' supervene gear l9 and, through roller clutch 6|, will impart its faster rotation to sleeve 52*. Gear I9 and pawl 56 will thusappear to lag behind. and sleeve 52- will thus be rotated by means of the rollefclutch 6| instead of pawl 55, untilfthe counting and indicating mechanisms have reached the beginning-of-line position and have stopped thereat, whereupon sleeve 52 will have stoppedand pawl 55 will continue to advance until it again engages the slot insleeve 52. i A drive connection I2 is secured to the left side i of gear |9 (Fig. 6) and is ,keyed-to sleeve 52. Drive connection 12 is provided with lugscooper ating with corresponding notches-in a drive disc 19 which is a part of a friction clutch 15. Disc M is interposed between a pair of .discs of friction sleeve. 52 on shaft 2|, and a washer 11.

between" washer l1 and nut 19, theadjustment being maintained by lock nut 8|.

considerable time andenhancing theispeed of operationo'f thea'pparatus.'

Loosely mounted on shaft 2| and immediately adjacent bearing-| is gearf9l. noted in Fig. 6, shaft 2| is provided with'an enlarged portion for part of its length. Abutting the shoulders thus provided at each end of the enlarged portion of, theshaftfare anti-friction bearings adaptedto carry a sleeve member 92,'which is provided with suitable sockets to receive the antifriction bearings. Sleevemember 92 is secured to gear 9|, thus providing a. suitable enclosure for the adjacent anti-friction bearing and has secured to it; in a. manner substantially in Fig. 6, the'helical shutter 89. I i

Immediately to the right of sleeve 92fis a flanged member 93 which supports one end of the cylindrical chart 88, the diameter of the flange being substantially equivalent to the inside diameter of cylindrica1chart88 The hub portion of member-93 is secured bymeans of a screw to shaft. 2| with which it rotates. Member 93 also .--serves as a retainer for the anti-friction bearing.

To aecomp lish this,tthe end of the shaft is drilled and tapped, and then counterbored' to suit the The end of sleeve 18 is formed'to fitfinto a, slot in a'ratchet 82, Figs. 6 and 8, which is rotatably mounted on shaft 2|. Fixed to ratchet 82 is the stop disc 84 providedwith apairofdiametrically opposed integral stop lugs 85 and 86 (Fig; 7)

ed'on the shaft 2| to theright of bearing 5|. jAs.

described in said patent, the circumference oithe chart 98 is divided into twenty spaces, each space The chart 88 has two similar halves, each'half comprising tenscales. The top scale in each half hashprovision .for nine space bands, the greatest numberneeded for a single line of composition. The bottom scale in each half provides nos'pace bands and is called the zero scale and is thatpoint to which theehart is returned for the beginning of a new line.

These series of scales are used alternately, thus it is seen that it is necessaryito rotate the chart onlyone-half revolution o'rles sto the zero posi tion instead of twice that amount; thus saving The cylindrical chart 881s riveted to' a. cap member 94. Adaptedto be held by means of a slot and screw adjustment between cover plate and capmember 94 is a cam member 96, the

function of which is to controlthe operation of a signal lamp 99 (Fig. 1-1) The right hand end. of chart-88 through member '94 issupported at the end of shaft2l and is held fast to the shaft by means of a. specially designed thumb screw 91.

tapered shoulder of thumb screw. 91. The end of theshaft is also slit. diametrically for, an appropriate distance suflicient topermit' the tightening of the screw to expand the sides of the slit shaft thus filling the-hole .infmember, 94, the further tightening of. s'crew 9'l actingto grip and hold" fast said .cap9fl. Itjis, thus'seen that chart 88" is adjustably mountable topermit of the correct registry ofthe zero scale onthe chart with a slot I01 (Fig. ,1). ,A1so,by means of this construc-v tion, therchart 88isremovable andgmay thus be e readily interchanged withsim-ilar charts bearing graduations corresponding to otherstyles of type,

since the thicknesses of the matrices of corre-' sponding characters vary according to the. styles of type. a Havingreference to Fig. 1,-it will benoted that associated, with the indicating mechanism is a bar 98 which straddles the chartand shuttereand which is provided with depending ends adapted to function as cam.fol1owers to coact with cam 96 and a cam surface 99 provided on the, sleeve member 92 (Fig. 6).- Bar is secured to bell crank lever I00. (Figs. 1 and. 11) which ispivoted at |0|, arm I02 of which'is providedwith a reverted end I93 coacting. with. the lower contact spring of spring contact lflll. The closing, of contact I04 completes a'circuit for the signal lamp 90 (Fig. 11), the function of which, when lighted, is toapprise the operator of the approach of theend of the lineg As fully disclosed in the aforementioned patent, chart88 is provided with a series of. scales, all except two. of which are provided with a heavi- 1y shaded portion (Fig. 1) and a lightly shadedportion-IUO, the lightly (shaded portion [96 representing the amount of J'ustificationpossible in a line containin one orrnore space bands. As

shown in Figs. 1 and. ii, chart 88 islocated to the rearandadjacentslotilll in a part of cover Hi8] as shown oi the machine, so that aschart 88 is revolved into difierent positions, in a manner hereinafter described, only one 01' the scaleswill show through the slot. l

As is understood from the aforementioned pate; ent, shutter 89 is caused to revolve a predetermined amount upon the depression of each character key 8 and the edge of the shutter showing I through the slot IM appears to move to the right toward the end-of-lineposition, and as the shutter does so, cam surface 99 coacts with the leit hand end of bar 98 to raise said bar and in turn causelever III to rotate to effect the closing of contact I04 to light the signal lamp 96. Now,

cam 96, previously described, has been provided which coacts with the right hand depending end of bar 58 to operate lever IIIII in the same manher as by means of cam surface 88. The purpose. of this dual action on lever IIII is to apprise the operator, through the. combined action of cams 56 and 99, the contours of which are cooperatively related, oi the arrival of a justifiable line: that is, that the line is reaching a suitable length to permit automatic justification is indicated by the. lighting of the signal lamp 90 controlled by the lever'IIII. In effect, what takes place is that, as the chart is revolved step-by-step in response to the depression of the space (or space band) key, the right hand end of bar 98 is raisedslishtiy upward thus accelerating the dashing of the sig-- nal by rotation of shutter member 89 which. effects the raising of the left h'and end.

Positioned to the rear of shaft 2| and disposed parallel thereto is a unit wheel shaft II I (Fig. 4) which is suitably journaled in anti-friction bearings mounted in brackets H2 and 51. Unit wheel H3 is aiiixed to shaft III at its left hand end, as viewed in Fig, 1, the periphery of which is provided with numerous gear teeth of a rather fine pitch so as to permit the division of the matrix. widths into small units, thus affording greater accuracy in the counting operation. In order that the counting may be accurate and the number oi different thicknesses of matrices may be a mini-' mum, each em, the unit of type measure, isdivided into eighteen equal subunits; eighteen having been found by experience to be a suitable number. Matrices of certain number of units in thickness are not used, that is, no matrices as thin as one, two, or three units are used, and twelvedlfierent thicknesses have been found to be all that are required. Each tooth on, the unit wheel corresponds to one unit of these sub-units, the teeth on gears 10 and H4 have been so chosen that each tooth corresponds to one-half em so that the length of line maybe adjusted to .one half em.

In mesh with gear Ill is a pinion Ill integral with sleeve I I5 (Fig. 4) which is fixedly mounted on shaft III. Loosely mounted on shaft III and having a splined connection with the fixed sleeve H5 is sleeve member IIG. Integral with sleeve H6 and oppositely disposed to the splined connection is pinion IIT corresponding to pinion IM. Pinion II! is normally in mesh with gear It onshutter member at Sleeve NC is also'pro vided' with a flange tit, thus forming between flange, I It and pinion. I I! an annular groove in which is disposed one end of reiease lever 9 (Fig) I) which is pivoted on a suitable bracket. I, the other end I20 of the lever being formed into a thumb portion whereby lever MS may read fly be manually rotated in a counterclockwise direction (as viewed in Fig. I) to shift sleeve: member IIO thereby' to the'lei't against the action or ahelieal springI-M and efiect the.ile rnesfning o! pinion II? frorn'gear sktoenable shutter 88 to bemanuali'y' and adjustably rotated to correspond to the length of line to be composed. As previously noted the pinions -I I4 and I H are normally in mesh with gears I! and BI, respectively, and gear It due to its frictional conneetion to shaft 2I constantly'tendsto rotate, and when permitted to do so upon the release of unit Wheel I I3, it causes said unit wheel and gears I'M and III to rotate a predetermined amount to transfer, in turn, the rotation thereof to gear 9|" and hence; to shutter;

-Matrizr't ickness counting mechanism H'aving reference to Figs. 4 and l5, the opera-' tion of unit wheel I H3 and its associated parts will now be described. 'As has been p eviously noted unit wheel II3 constantly tends to rotate by reason of its relation, to gear I0. However, its rotation is controlled normally by pawls I25 and I 25, one or the other of said 'pawlsbeing' in engagement with the unit wheel during the counting operation, During the restoration of the counting mechanism to begin a newline, however, both pawls are released simultaneously, thus allcwing the unit wheel to rotate ireely to the beginning-oblige position. Briefly, during the counting operation pawls I25 and I26 are operated so as to bring pawl I28 out of engagement gagement and pawl I 25 into engagement with" unit wheel '3 substantially simultaneously thus preventing further rotation of unit, wheel [I3 while pawl I26 returns to its'ori'ginal position. With this brief preliminary descriptionv of operationthe construction of the'mecbanismwili now be given in detail. I a

Pawl I25 is anintegral partoi lever I 28 which is pivoted at 2am bracket'zz; which'bracket;

as previously noted, also provides'a bearing for shaft 20. Lever I28 normally tends to rotate. in a clockwise direction about its pivot I29 due to the tension ofspring Isl, one and of which is secured to arm I30 of lever I28 and the other end (not shown) being suitably connected to a post mounted on bracket 22. PaLwlIlS thus is maintained normally "in meshing engagement I lever Ml is pivotallymoimted on a stud I secured to bracket 22.. ..The end o! arm I" is and n3. Lev.

provided with a. cam. follower; rollerjJ I; adapted to operateinazcamgroove ii -operating car-11x62.

I Osciliatory= motion thus is-imparted to operate:

his lover min Properly timedrelationxwith-,the-

several functions I of the. apparatus. Lever I 36 is articulated to; bell crank. .I 42,. which 1, is 1 more clearlyshown in Fig. 4,]and has itslowerl end laterallydisposed nd en a d in s t i ew tent member I43; a cotter pin being provided to prevent their disengagement.

3- is pivotally connected. to the end of-g detent adjusting levem 144. which; is pivoted to bracket 2 at MS andfw m yhbetadi s d vswine I46 and screw I41 in a;wellflk'nownmanner. 1' 1 .The upper edgeof lever I43 near itsfr eend Detenttm be n lever I2Btorotat 1in a counter-clockwise direc* tion against,thelaction:ofspring: I3I thus causingrpawl -I'2 5 tofllaecome; disengaged from zunit wheel H3. Simultaneously with the disengage ,n'ient offpawl I25. occurathe disenga ement of lever arm I68 from the lug I66 by means of the camnnng action'of stud I15 on arm' I14 which action causeslever; I69 torotate slightly in a s e o o a i h cor e q d n W1 notches I46 (Fig. 4 in the bottom: edgeslofqstop bars I21so as to hold'or detainthe ei tedstop.

bar inits s elected position during the counting.

operation.

A lever I54 iFigs. 4 and is pivotally secured to arm .l52at I53 and-normally tends to rotate in a counter-clockwise;direction due to the tension of spring l55one endof which'is'attached to lug I56 of lever l54' and the other end being attached tolug l flof leverarm I52. This rotative movement is arrested by adjust n S w I 58, .mounted on Pivotally connected at I61 to lever IE4 is a and locatedv near itslower end is the aforementioned pawl I26. Theupperarm of lever I62.

I has attached thereto. one end, of spring I63 the other end of which issecured to theend of arm I64 ofi lever I54. .Due'to the tension ofsprin I63, lever I62 is biased toward the left (as viewed in Fig; 15).;and is" normally held against an adjustable stop member I65. 'In operation, as will presently appear; pivot I H is brought into coincidence Withthecenter ofunit wheel I.I3.".

a1 laterally disposed; lug. I59 on clockwise directionabout its pivots I12 and I13 against theaction of spring I18. At the same time, detent -lever I 43 islifted into thenotches in thebottom edges of the stop bars to hold the bars immovable during the countlng operation.

. As previously noted, wheel Il3 normally 1 tends to rotate in the dii ectio n indicated by the arrow unless restrained by pa-wls 125 or I26, or

lever arm I'68. Pawl I26'now being in engage- Inent withunit wheel I I3. and bein'g freeofrey straint' is'Yjadapted to be'carrid along with its unit wheel stop lever l fil integral with which Unit wheel sis provided with his I66 igs? 12 and 15). Lug; I66 assumes the pj'osition'shown when un'it wheel H3 15 in its stop'positiontat, whichv timelug I66 abuts. arml'lfifl, of stop lever I68. I'JLever I69 comprises a U-"shapediatta'ehing portion (Fig. 4); pivotally secured at pivots I12 which-arm' lrm -actsiwith stud n 5 secured to.

theend of ar 152. of lever I4I, the purpose of;

which will presently appear; "Lever IIiais also pr vided with an extension I16 (Fig 4) "supportingat its extremity a follower roller I11-which] coactswlth camflr Lever I69'normally tendsto rotate in afoounter clockwise' dlrectiondue to the tension. of spring I18, one end ofwhich is] attached to leverI69 andthe other end to a spring postgsuitably'mounted on the frame off the apparatus. 1'

f'The operation of the. mechanism shfownin] Fig; 15 will now 'be given jwherein it is shown.

in its normal stop position Onecompleteop: eration of the countingme'chanism is 1 performed during eachone-half revolution of: operating;

cam. 32. Upon initiationof" rotation offca'nifi andduringthe first 90 of its rqtationflevenfll' is rotated in a oounter clock'wise'directioncarry I6 9 is providedwith arm; I14 I I adjacentto anf in spaced relati'onfwith arm I6 8,

lever I62 by theunit wheeluntil arrested by one of the stop bars I21, which, as observed in Fig.

4,.is adaptedto be moved into thepath of lever I62. .S top bar I82 (Fig-l5). is a fixedstop bar andrepresents the maximum thickness of matrix. Lever I62 thus has been rotated against the action of spring I63 so that when operating lever I4! is rotated in a clockwise direction duringithe second 90? movement of cam 32 lever I62 is'loweredv thus causing the disengagement of. pawl I26and permitting lever I62 to be swung back by the tension of sprin-gl63 to the stop I65. However, before pawl I 26 becomes completely disengaged, pawl I engages the unit wheel due tothe retraction of lug I and thus prevents a the rotation of the unit wheelwhile pawl I26 is being restored to its normal position.

It, is apparent now that stop lug 166 of unit wheel II3 has moved pastithe stop arm I 68; It. is also apparent that, due to the camming-out action of stud ;I1-5 on arm I14, stop arm I68 will never interfere with the rotation of the unit wheel during theicountir'igoperation because of the fact that every time the counting operation is effected the operating lever MI is actuated and hence the camming action of stud I15 on arm I14 is automatically brought into play; As will presently appear, lever I69 is also actedupon by cam 1| through follower roller I11 during the time that'um't wheel] I3 is rotated to its beginning-of-line position," indwhich event the function of stop lug I66 will become apparent. As will appear from the ensuing disclosure, operating-cam32 the controls the operation of theperforating mechanism, Figs. 1, 16 and 17. Normally the counting and perforating operations are performed simultaneously, but since there are certain special perforating operations which must be performed wlthout'the counting operation; for

example, spacing, shift, elevator or carriage return and line feed; provision has been made to render the counting me'chanism inoperative. For

this purpose the previously mentioned lever I42 suitably pivoted at I62toth'e frame and has one mg with it its associated parts; namely.levers this counter-clockwise movement pawl 1 I26 is brought "into meshing engagement with the 'unit wheel, after which lug. I35 'of levernl36" in its up-;-.-; ward,v movement intercepts: lug;.I 34 of lever; I 28: and causes, by its continued upwardmovement, v

arm articulated to lever I36 and to the other armis pivotally connected a link I83 which is in Incide'nturn'pivotally connected to lever I84. tally, lever I64 isone of a series of levers. Hi4, I85 and I86 "(Fig 4) which are adapted to transfer the settingbf the selector mechanism to the countingv and perforating mechanisms, as will ere n fterappearn ,1 I 1 When the keys controlling the above mentioned special operations are depressed lever I84 is operated in amanner-hereinafter described to cause lever I42 to rotate in a clockwise direction (as viewedin Fig. 4), which action throws lever 36 to the right thus preventing lug I35 frm intercepting lug I34 as heretofore thereby preventingthe disengagement of pawl I from unit wheel H3. Operating lever MI thus is oscillated without effecting the rotation of the unit Wheel.

Mounted on cap member! immediately to the left of the counting wheel H3 and its associated mechanism (as viewed in Fig. l) is the perforating mechanism, shown in detail in Figs. 16 to 19. Heretofore in devices of the kind herein disclosed a perforating mechanism has always been provided with a horizontal punch blockthus ren-. daring it diflicult and even impossible for the operator to readily check the result of his work. An important feature of thepresent apparatus is the provision of 1 a sloping punch block, thus presenting the perforated tape at all times to the full view of the operator. 1

Perforating mechanism Referring to Figs. 16 and 1'7, the perforating operating lever I92 is pivotally mounted on stud.

I93'sccured to arm I94 of frame I9I. As clearly shown in Fig. 1 the fulcrum portion of lever I92 is of U-shaped conformation to provide a double bearing onstud I93 to compensate for the eccentric load imposed on the lever I92. Mounted on. arm I95 of lever I92 is a follower roller I98 which co-acts with the periphery of the operating cam 32. Roller I96 is constantly held incontact with cam 32 by the action of spring I 91' one end of which is secured to the extremity of arm I95 and the other end is attached to spring post I99. I r

Arm I99 of lever I92 is provided with a series of rectangular holes adapted to receive punch in-' terference bars 291 and in which the bars 20I are slidable. As indicated in- Fig. 19, the-interference bars 2!" are each pivotally connected to individual controlling levers-292, which as shown in- Fig. 17 are pivotally mounted'on a common in notched pivot shaft 203' suitably carried 7 bracket 20 integral with frame NH. The lower endsof levers 202 are pivotally articulated to levers I85. Interference bars 20I are eachprovlded with a notch 205 (as seen in Fig. 19) so that when a bar 20I is not selected its corresponding punch will not be operated; but when a bar 2M is moved to: the right (Fig; 19) upon bars 20I (Fig. 16)"-and in co-operative relation-- ship therewith is thepunch block 208 which may lie-of any suitable construction. In the present embodiment, however, punch block 208 comprises substantially a rectangular frame fixed to frame I9I at 209 and-supported on the opposite side .by bracket 2| I, which in turn is secured to frame I9I by screws 2 I2. Mounted in frame 208 in, alignment are the punches 2-I3 (eight in the present embodiment) one of whichisthe smaller diameter feed hole. punch and the remaining. are,

hole punch which .is-

' in accordance with a seven-unit code.

the code hole punches (see Fig. 1) the punches co-acting with a female die plate 2I4 The punches are provided near their lower endswith shoulders cooperating with a spring controlled stripper plate 2I5 of familiar construction.

The perforator is here shown as a seven-unit code perforator, whereby tape may be perforated It is, of course, apparent that the perforator, herein shown can readily be adapted to the preparation of perforated tape according to a code comprising anynumber of elements; thus hereinafter will be described a modification of the present invention adapted to the production of. tape.

1 conformable to a six-unit code.

. As shown in Fig. 16, arm I99 of lever I92 is provided at its extremity with a tongue 2l6 fitted into a groove in tape feed lever 2H. The. tape feed lever 2 I! as shown in Fig; 18, is pivot? ally mounted to the frame I9I at 2!!! and is provided at its extremity with a hook portion 2 I 9 cooperating with the end of tape reel lever 22l' as will presently appear; I

Pivotally mounted on lever 2II near its outer end is tape'feed pawl 222 which is'heldinto cooperative relation with feed roller 223 by spring 224 one end of which is secured to pawl 222 "and the other end attached to a lug on lever H1,

The feed roller 223 as indicated in Fig. 1, is

.. provided with feed pins 226, ,in spaced relationto: each other'and circumferentially arranged about the roller. Suitably mounted on stud 221 secured to feed roller support 228 and co-operating with feed pins 226 is pressure member 229', constant pressure being exerted by coil spring 23I'. with a star wheel 232 and knurled end 233 for manual operation.

after the usual fashion. A back-space lever 2'35 operable on star wheel 232 in a well known man-' larly as mentioned in connection with the latter one complete operation is performed during each one-half revolution of operating cam 32. Thus during the first one-fourth revolution of cam 32, clockwise rotation to a limited extent is imparted to lever I92 against the action of spring I91 thereby causing interference bars 201 to rotate in" alike direction about their pivotal connections with levers 202, and in the event that any of the bars 20I are selected and thus are in their right hand position (Fig. 19), the shoulder 296 thereof.

will intercept the corresponding punch and effect the perforation of a corresponding hole in the tape (which it has been presumed has been prop erly inserted in the punch block preparatory to perforating) Simultaneously with the perforating operation,

tape-feed lever 2I'I (Fig. 18) is caused to rotate a predetermined amount in a counter-clockwisedirection about its pivot 2! by reason of itsconnection with tongue 2"? of lever I 92, thus raising the pawl 222 to engage the next tooth ofthe feed roller whereby, when operating lever I92 is returned to its normal position, lever 2II is also actuated in a reverse direction to thereby effect the rotation of the feed roller and hence to effect the stepping of the tape. r

In actual practice the perforating mechanism The outer end of feed roller 22 3 is provided Associated with star wheel} 232 is a detent member 234 (Fig. 17) operableo f lever 2I1 causes lever 22I throu'ghits engagement with hook" portion 2I9 to be thrown sharply upward thus tending to whlrlthe' tape winding reel, thereby providing an automatic take-up and preventing the perforated tape from becoming broken, as would resultif a spring tightening means were provided. The automatic tape winder will be hereinafter fully described.

v Permutation balr um: Arranged below the keylevers 5 (Fig. '20) and disposed transversely therewith are a plurality of permutation bars 24L codebars 242, one code bar being provldedlfor each key lever 5, saidcode bars being disposed parallel to and in, edgewise relation to its corresponding' key lever. Code bars 242 are provided with notches arranged inaccordance with a permutation code in a well known'manner.

, Each permutation bar I (Fig. 21) is carried "by a pair of bell crank rocking members 243 and 244,:whichare pivotally carriedon pivot rods- 245 c and 248 respectively. Each membe'r'243 and 244 is'provid'ed with an ear 241 extending backward onv which bars 24I are carried. 'The ends, of they depending arms of each pair of members 243 and 244 are pivotally connected to a horizontal bar 248 which extendsbeyond each of said connece tions, one end being spring connected by. spring, 249 toa common spring support 25L The other extendedend is provided with an ear 2 52 adapted tatio n bars 24I associatedwith levers I88 and a permuted combination of bars;24l associated with levers I85. However, whenever a function.

Thus each code bar nor- Interposed between key levers 5. and permutation ,bars 24I are notched,

. to fit into. anotch in the associated lever I84, I85

key'is operated, none of the bars associated withlevers I88 is actuated, but the bar 24i associated withlever I84 is actuated in its stead, theeifect of thus operating lever I84 having been described as actuating bell crank I42 (Fig. 4)v to effectthe 'inoperativeness of lever I38 upon lever [28.

. Levers I84, I85 and I88-as-indicated in FigWZO,

are .pivotally carried oncommon pivot shaft-254 suitably mounted in frame 255, and as already j noted these levers are. operatively connected. to

link I83 (Fig. 4), levers 2ll2,and stop-bars I21. When any one of the bars 24I is depressed by the operation of a "key lever 5 through the medium of the corresponding code bar242,.bell cranks 243 and 244 assopiated; .with the actuated bar I will be rotated in "a;

(Fig. 17) respectively.

clockwise direction (as viewed in Fig; 21) thus urging the corresponding bar 248 toward theleft 65 rotation of the icorrespondinglev'er I84,-,I;85( or I88 about the common pivot shaft 254. The' against the action of its spring 249 to. efiectthe rotation of lever I84 effects through link I83 the rotation of lever I42 (Fig. 4) to shiftylever I38 so. as to prevent lug I35 from. intercepting lug I34 as.

previously described. p r

The rotation. of levers I85 effects through levers 202 (Fig.17) the operation of theselected interference bar 20L, .as previously. mentioned.

Lastly, the rotationof a lever I88 eifectsdirectly -matical books.

is operated rapidly and thus'thesudden motion the operation of a stop bar I21. In the presentembodiment, the stop-bars l21 are eleven in. number and 'arethus by means of levers I88. shiftable individually to the right as viewedin Fig. 4 into the path'ofthe pawl I28 for the purpose previously" 'described. A twelfth stopbar I82" is 'provided asshown in Figs. 15 and 17 which is a fixed bar. 'I'hus these twelve stopbars correspond to the twelve different sizes ofmatrices used... I

Interchangeable code bar unit An important feature of this invention is the provision, of an interchangeable code bar unit 251 as shown in Fig. 23,. whereby it'is possible to change the operation of the-counter so that the apparatus maybe used for matter to be set in different styles. of type; foryexample, Modern Roman, Old Style Roman. Gothic, etc., or to be set in different languages, or in special fonts of type as for example, fonts. suitable for mathe- In order to compensate for the varying thicknesse's and to obtain anaccurate count of the thicknesses .ofxthe matrices composing a line it is necessary to provide code bars 242. that are notched tov correspond to. the particular font.

However, that portion of each code bar which controls the selection of the permutation bars 2'4I corresponding to the punch interference bars, ordinarilypremains the same for all fonts since the code combinations are assigned primarily to the particular keys on the keyboard.

Ordinarily only that part of the codebar which mote the substitution of code bars for the various.

fonts of type, the code bars for each diiferent font have beenassembled in an individual unit 251, which comprises a'frame 282 provided with,

runners 258 adapted to: slide in corresponding grooves 259. in the frame4 (Fig. 23).

Code bars 242 are self-contained in frame 28I, which-in turn is shiftably mounted in frame 282, as is more clearly shown in Fig. 24. As indicated in Figs.- 23 and 24, the code bars are carried by springs28ll, which normally tend to hold the code bars in their upwardposition against comconnected tolinks 288iand-281 (Figs. 24 and 31) Links 281 inturri are pivotally connected to the supports 288 and 289 (Fig. 23) secured to frame 28 2.1 288 and- 281 are fixed. to rock shaft 21I which issuitably journalled in the supports 288 and 288. -Paral1el motion is thereby permittedbetween the frames 26I and 282.

tensions 285 is oneend of spring-212, the other end of which is, fixedito. spring support 218' mounted onframec282 The extensions 285 are: guided in their to and fro movement in. slotted"v guides in the spring support'218..1 "Thecode bar framethusls normally heldtowardits back positlon by the spring 212. i The code 'bar unit 'is' provided with-lugs 215. whereby; it is adapted,

when inserted in the frame 4, to1be=rem0vably attached thereto by means of screws.

well known that a lower case matrix'is frequently difle rent in width than a corresponding upper Atsy. .tached, to lug 213 integral with one of the ex the other secured to the common spring support.

case character,.' hence since the same keylever is depressed for the upper case character as for the corresponding lowercase character it is necessary to vary the operation of the counting mechanism accordingly. Therefore, when the code bar frame is in its normaliback position the notched edge of the code bar is adapted, when the code bar is depressed, to actuate the permutation bar corresponding to the thickness of the lower case matrixand hence the corresponding stop bar I21 is actuated" But when the code bar frame is shifted to its front position, in a manner hereinafter described, the same notched edge will actuate the permutation bar corresponding to the thickness of "the capital or upper case matrix and hence a different. stop bar I21 will be actuated. I

Seven-unit keyboard arrangement The particular keyboard shown in Fig. 1 has been devised to combine those elements which lead to the greatest efficiency. By using a sevenunit code the number of operations made by the operator is less than if a six-unit code is used.

With a seven-unit code for controlling composing machines it is possible to have a key for each character so that only one operation'is required for each character; However,if this is done, a very large keyboard results, which is'much more difficult and expensive to build,- especially on account of the length of the code bars,bails, etc. It also results in a keyboard in which the openator must move his hands over a large area and thus lose speed. I

However, by providing'separate keys for all characters except capital letters, a highly efficient compromise is made. With @theshift key mechanism here provided the shift key and character I key may be depressed v simultaneously; whereas, when a shift signal is used as in telegraphy, a single upper case character requires the successive depression of threekeys, namely the "shii key, then the character key and finally the unshift key.

Thus, in the keyboard arrangement shown in Fig. 1, the shift mechanism indicated in Figs. 24 and 25 is utilized, whereby theshift operation becomes necessary only for the .upper case letters or capitals, all otherletters (lowercase) and characters being produced inthe unshift or nor-- Lever 288 is also provided with an arm 25H to which is pivotally connected one end of link 292 the other end of which is pivotally connected to key lever 5.

Each member 282 is provided with an operating shoulder 294 which cooperates with operating bail 295, and a foot portion 298 adapted to co.- operate with the associated codebar 242. Lever 288 is also provided with an extension 291 to the end of which is attached one end of a spring 298 and the other end of which is secured to the frame 4. Lever 288 normally tends to rotate in a counterclockwise direction (as viewed in Fig. 29) thus maintaining arm 29l against the common stop member 298. -j

The. operatingbail 295 (as viewedin Fig. '20) is substantially U--shaped and is fixed to operating bail shaft 38| which is suitably journaled in frame 4. Bail 295 is provided at one end with an extension 382 to the extremity of which is attached one end of the operating spring 383, the other end of which is secured to frame 4. Bail 295 is provided at the same end with a lug 384 which I is adapted to cooperate with trip latch-385 (Fig. 22) integral with lever 388which is pivotally mounted at 381 to frame 4. Pivotally carried by ,stantially as shown and the other end to-lever mal position of the apparatua,therebygreatly The following description relates to the key lever system and the operation thereof reference being hadto Figs. 24 to 33. A11 of the key levers are pivotally mounted on the pivot shaft 28l which is suitably mounted in the frame 4. Associated with each key lever 5, as viewed in Fig. 29, is a member 282 provided with a vertical lug 283 adapted normally to abut the stop 218 and also, when in operation, to co-act with release bail 284. Member 282 is also provided with an extension 285 which in turn is provided at its end with a shoulder 288 adapted to cooperate with arm 28l of lever-288 pivoted on commonpivot shaft 289. Lug 283 is normally maintained against the stop 218 bythe action of spring 219 one end of which is attached to member 282 and 386. Lever388 in turn normally tends to rotate in a counterclockwise direction about its pivot 38'! due to the action of spring 3l 3 one end of which is attached to lever 388, the other'end being secured to frame 4.

Bail 284 is positioned adjacent to and in parallel relation with bail 295. y Infthe present embodiment, bail 284 is of U-shaped cross section and is secured longitudinally to the pivot shaft 3l4 which is suitably journaled in frame 4. Bail 284 is held normally against a stop 3I5 (Figf22) depression of a key, as will presently appear, its.

lug 3|l .co-acts with arm 389 of lever. 388 and during the initial movement the lever 388 is caused to rise slightly due to its slotted hole an so that arm 3l2 will clear bail 295. The further movement of lever 388 by bail 284 will cause lever 388 to rotate in a clockwise direction against the action of spring 3l3 until latch 385 becomes dis engaged from lug 384 thereby permitting the action of spring 383 to take effect, thus causing bail 295 to rock sharply in a downward direction. Upon the downward movement of bail 295, bail 284 is permitted to return to its left-hand position against the stop 3l5 by meansfof spring3l8.

Bail 295, as previously mentioned,"is fixed .to rock shaft 38| Likewise fixed to shaft 38] is bail restoration arm 3I8, Figs. 12 and 20. As shown in'Fig. 12, arm 3l8 is adapted to cooperate with arm 3|9 of bail restoration lever 32l which is appropriately pivoted at 322 to frame 4. Lever 32l is also provided with arms 323 and 324. Mounted at the extremity of arm 3231s c'am fol- .lowerfirolieti-MS; zwhich :cocberates with operating iliail restorarionxsscamidfl rotaativrily amounted rm Jhhttbtl] previously described. 3211 run 21ewler? 321 cd-iazcts with stop dugstfl fi andw Minot disc 29 secured to cam 30, as previously mentioned; i.

alreadyrnoted -.-in zconnedtinn withe'figl' 5, :lu'gs;liSyandfiSiTElSC;wflvidel'a' drive connection hetweenr driveg disc 2:7..1-a.nd 1mm; elm/er ,i 821 normally tends :to: rotalte :inzra; sonnterclaokwise sdiiectibtil under theaactiohmf :hwingMlflsone Bird 'ofizwhiohcis suitabiy attached to ievw'3!:l,(flihe sother endrbeing secxiredztdfrmneil. AsvbBfoiIe- .rmentioned, drive discufluisJndapted to rotate, when released for rotationyby'amemsrof its.f-ric= 'tionaliconnection to 'coirstamxly' mtdting :sleeve :26 (Fig. Thus when bail .295 isrnporatedhshaft pilvotally mounted on: :the common 5 pivot; shaft 28 I as heretofore mentionedj1 and are held ::in

normal inoperative "or clockwise position by vrthe action ofxone of. the springs: ZSBupon lever 480 :and a. 1inlc292 similar 'rtoe the mannerrprevimusly described. 2 Key levers-r402! andlflz areieach provided with e; rearward extension 4'03 adapted to; cooperate with arm 404 of shift link A05,

which dink: pivotalh' secured? .tovmernbers-iifis and 265 such as tofipreservetthe parallel motion eifect betweeni'the, fixedwsupports 1-268 and 269 '(Fig.w23) and the code bar frameflei;

-To-,maintaincodelber frame ZEIin its normal left handposition "(as viewedin Fi 24) a {spring 2 12,;as' previously; stated, is provided; oneend f GUI .wili likewiserevolvega. Iimi'tcd'iamounmcausirxg-ezitrznd'I 8 X'Figv 12) "also 'to' rotate wlrichdn turn willcimpaatt, eloekwisenrotaition ifd. lewemm trithus dng brought :into ennt with-camsau. '(NO'W ids; cam -mtates, ifOllOfWeB aifiiids' eammed out lamb-lever 32-! thusdsvcaused :torotatef-inaecounlterblockwise rdirection wtorimpac'twoloclcwise; rotatiomtonrm ifll'awhich tthrough {shaftifll erotates bail ifli iEiga 2,2)r-in .alike direction L'egainstwthe motionmfispring 303, thus penmitting lever 385 toyirespond to the; rpullfof fits spring 34:3 to introzd-une; :latch 385.." again -into "the path of lug; 384 and resetbail iiikmeparatory to a succeeding Koperation of a rkey lever. the resettingr operation -justmdescnibed, stop amid (Fig. i2). is dnt-m'dueed (l-intol the" path :of ring r1826," time restricting cam- 130 to :onhmone-halfr revolution -for eechicyelewoi operation.

which is attached to extension 2T3 andL the other end is securedto the frame 262 at 210. Thus it is observed thetw'vhen oneof the keys'fifll and M32 is vdepressedeor caiused to-=totateslight1y in a counterclockwise-direction like rotation. is rimparted .ttor :link S -through iextension 18-3 :and

be 'ck'scrihed. he depreseienmf i=keyv-6 mauses keylever 5 toirotatetoaFl-imitedFeKtent-in-a c1ockwise-direction" about pivot 1281 which through shitted toward theright 1 against the; action: -01 I springv 212 in which'jposition lthe-code bars iaFre adapted HVBfi GCt- :thefco'unting efupperptcase lettiers, as previously described. Code 1138;]: .frazme RSI -iswadapted,mvhen key leverial "is released, to returntoiits-rnormalposition,

However; when they ;1everw402:.-is uoperated code bar frameifi -l-zis act ated to thevright the :same ves -in the case of key--lever-fl lqexceptthat frame I isodapted Ito; bex locked in theshi'f'ted 1308i? tion, by means of book member' lfl'l, igs. "24 and.25, inrthe following manner. Key leversi'lol and 401 are pro-yidedfiwith studswll l and M2 adaptedto oo act with the bevelled upper sends 0 oQk -;member:;401 and reieese member M 3; re-

' spectively,whichwmembers rsure-adapted tube linkbZB-Z imparts likerrotation to lever 285 about its pivot 289 against the aotionwobspning lw.

Memberal M ,--thus: is caused, mthrm h the *cooperetipnfof I 2E? oiieverz- "Band shoulder i2 86 rtogslide toward theleft on stop-:mermben-2J8;sthe .-lug -'2 83- simultaneuusly: engaging the innit-1B4 and causing it t) rotateraboutritsrpivoti il therefteot ofrwhich is mop-release hail iafil-forwopemtion; as

has already been described. "Shoulder-2M of' member 282; however," before thereleasepfibdil 285; has been: rinterposed between-Mah la! end ,oode hen (242 corresponding to the hey lever-r depressed Thus when baiii lei-is actuatednmem- ,ber 21824;; licensed-thereby to move downwardly in oisupstentielly :horinon-tal manner, thus urging code hart-242 in the same :direction: to veffect; the operation iof; predetermined vones "of per-mutation f5l4 I; m m e afi a t a d? by v v .ha il 2:15, dug 283 beeeme disengaged trontbail 284 rand, shoulder 286 became disengaged; from arm 281,. thuspermitting Lbail GM to return to its position-"under; thevactiont-ot :itsv return spring- 31 6, (H9 22), gpreyiouel'y mentioned, and

also ipenrnrittingilteylever -5w170- .returnto its: norrnaJ position. When-bail "295--is-rest0red tow-its original ,position, in theimanner 'hereinbefore described, member 282 is F again, restored to t its origins; position (shownrin, Figw29) "by r a, spring 219." U t r '.Ce,ita,i.n marker "levers are Ilprovi'de'dwwith whichspecialflfunotions (may tee-initiated, and of each of which ,afldescription Y wi11.=now=..be=-given.

fixed to rock shaftwlll. suitably journalleddn frame v J-MZemherv M 3.-. is providedmwithq an" extension l-5 to which is attached- ;one =end-of spring IS, the other-end of whichiswsecuredto frame 4. Spring 6 thus normally tends'to-hold I memhers 401- and 4 i3tagainst. th t studs 44 {and 4 12.; shift-lock keys lever! fl-Ztisdepressed,

armhdo l is caimmed outruntil-pin: on stud" 4M -.en gagesfthe hook "portion ,-thereof, lever 402 thus being held or elocked rin, the shift position until releasedbyv the subsequent operation of eleven 5M which when operated .eausesw member s 4 I 3 to hrdtalte-in a. cloekwisetsense which through rock shaft L4H imparts likenrotation;to-member 401 thus, releasing stud llllwand permitting lever-1 402 to returnltowitsflnonnal position. v

the useeof this form of shift mechanism no perforated record is made when a shift-key is operated the function of ,the shift mechanism being to maintain the code bars 242 in the shifted -position while thesperfo rated recor'dfiis being made of the uppercase characters; *Inother words, the depression of the shift key does not initiatetthe operation of therapnaratus 'to effect either. the vperforating Tor counting operations, as 1its done-upon the operation of the remaining v Space-keyarrangement The; space-key arrangement is shown in' Fig. 26; Theu'simoe key lever m is pivotally mounted on common. pivot shaft 281. 'Having' reference to i s 1; itris noted that key-lever fll is operated byspaceebarw fll"by obvious means through rock shaft 423 Member 282= associated with key-lever Mil ismrovlded with enfexten'sion 424 which cooperates with arm l25qofihai1 26L fortoperating 

